ChemInform Abstract: Synthesis and Luminescent Study of Ce³⁺‐Doped Terbium‐Yttrium Aluminum Garnet.

Abstract

Synthesis and Luminescent Study of Ce 3+ -Doped Terbium-Yttrium AluminumGarnet. -Polycrystalline samples of (Tb0.8Y0.2)3(1-x)Ce3xAl5O12 (x = 0-0.03) are prepared by solid state reaction of Al2O3 and mixed rare earth oxides (Tb,Y)4O7:Ce (about 1300°C, 3-5 h). The products are characterized by XRD, SEM, and emission and excitation spectroscopy. Substitution of Tb 3+ for Y 3+ in the garnet structure results in broadening of the emission band and a shift of its maximum towards longer wavelengths. The excitation spectra for the Ce 3+ emission contain broad bands at 6.73 and about 9.5 eV in addition to the 4f n →4f n-1 5d excitation bands of Ce 3+ and Tb 3+ . -(DOTSENKO*, V. P.; BEREZOVSKAYA, I. V.; ZUBAR, E. V.; EFRYUSHINA, N. P.; POLETAEV, N. I.; DOROSHENKO, Y. A.; STRYGANYUK, G. B.; VOLOSHINOVSKII, A. S.; J. Alloys Compd. 550 (2013) 159-163,